Overhaul VirtFusion provider: 20 resources, 30 data sources, multipage pagination

Complete rewrite of the VirtFusion Terraform provider with full API coverage:

- 20 managed resources (server, build, SSH key, user, firewall, IP blocks, etc.)
- 30 data sources (hypervisors, packages, servers, IP blocks, self-service, etc.)
- New HTTP client with proper error handling, query parameter support, and
  automatic multipage pagination via GetAllPages (fetches all pages from
  Laravel-style paginated endpoints and merges into a single response)
- Fixed type mismatches against live API: ServerData.Suspended (int→bool),
  IPBlockData.Type (string→int), PackageData json tags (primaryStorage, etc.),
  ServerData nested CPU/Settings/Resources structure, HypervisorGroupResources
  array response
- Configurable results-per-page (default 300) on all list data sources
- Migrated CI from GitHub Actions to Gitea Actions
- Updated goreleaser config, go.mod dependencies, and examples

Verified against live VirtFusion instance at cp.vps.ezscale.tech:
all data sources return correct data with full pagination support.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/provider/resource_self_service_credit.go

@@ -0,0 +1,173 @@
+// Copyright (c) EZSCALE.
+// SPDX-License-Identifier: MPL-2.0
+
+package provider
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"terraform-provider-virtfusion/internal/client"
+
+	"github.com/hashicorp/terraform-plugin-framework/resource"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema/float64planmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema/int64planmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+)
+
+// Ensure provider-defined types fully satisfy framework interfaces.
+var (
+	_ resource.Resource              = &SelfServiceCreditResource{}
+	_ resource.ResourceWithConfigure = &SelfServiceCreditResource{}
+)
+
+// NewSelfServiceCreditResource creates a new self-service credit resource.
+func NewSelfServiceCreditResource() resource.Resource {
+	return &SelfServiceCreditResource{}
+}
+
+// SelfServiceCreditResource defines the resource implementation.
+type SelfServiceCreditResource struct {
+	client *client.Client
+}
+
+// SelfServiceCreditResourceModel describes the resource data model.
+type SelfServiceCreditResourceModel struct {
+	ID           types.Int64   `tfsdk:"id"`
+	Amount       types.Float64 `tfsdk:"amount"`
+	CurrencyCode types.String  `tfsdk:"currency_code"`
+	UserID       types.Int64   `tfsdk:"user_id"`
+}
+
+func (r *SelfServiceCreditResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
+	resp.TypeName = req.ProviderTypeName + "_self_service_credit"
+}
+
+func (r *SelfServiceCreditResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
+	resp.Schema = schema.Schema{
+		MarkdownDescription: "Manages self-service credit in VirtFusion. Deleting this resource cancels the credit.",
+		Attributes: map[string]schema.Attribute{
+			"id": schema.Int64Attribute{
+				MarkdownDescription: "The identifier of the credit entry.",
+				Computed:            true,
+				PlanModifiers: []planmodifier.Int64{
+					int64planmodifier.UseStateForUnknown(),
+				},
+			},
+			"amount": schema.Float64Attribute{
+				MarkdownDescription: "The credit amount.",
+				Required:            true,
+				PlanModifiers: []planmodifier.Float64{
+					float64planmodifier.RequiresReplace(),
+				},
+			},
+			"currency_code": schema.StringAttribute{
+				MarkdownDescription: "The currency code (e.g. `USD`, `EUR`).",
+				Required:            true,
+				PlanModifiers: []planmodifier.String{
+					stringplanmodifier.RequiresReplace(),
+				},
+			},
+			"user_id": schema.Int64Attribute{
+				MarkdownDescription: "The ID of the user to add credit to.",
+				Required:            true,
+				PlanModifiers: []planmodifier.Int64{
+					int64planmodifier.RequiresReplace(),
+				},
+			},
+		},
+	}
+}
+
+func (r *SelfServiceCreditResource) Configure(_ context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
+	if req.ProviderData == nil {
+		return
+	}
+
+	c, ok := req.ProviderData.(*client.Client)
+	if !ok {
+		resp.Diagnostics.AddError(
+			"Unexpected Resource Configure Type",
+			fmt.Sprintf("Expected *client.Client, got: %T. Please report this issue to the provider developers.", req.ProviderData),
+		)
+		return
+	}
+
+	r.client = c
+}
+
+func (r *SelfServiceCreditResource) Create(ctx context.Context, req resource.CreateRequest, resp *resource.CreateResponse) {
+	var data SelfServiceCreditResourceModel
+	resp.Diagnostics.Append(req.Plan.Get(ctx, &data)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	creditReq := client.SelfServiceCreditRequest{
+		Amount:       data.Amount.ValueFloat64(),
+		CurrencyCode: data.CurrencyCode.ValueString(),
+		UserID:       data.UserID.ValueInt64(),
+	}
+
+	respBody, err := r.client.Post(ctx, "/selfService/credit", creditReq)
+	if err != nil {
+		resp.Diagnostics.AddError(
+			"Error Creating Credit",
+			fmt.Sprintf("Could not create credit for user %d: %s", data.UserID.ValueInt64(), err),
+		)
+		return
+	}
+
+	var creditResp client.SelfServiceCreditResponse
+	if err := json.Unmarshal(respBody, &creditResp); err != nil {
+		resp.Diagnostics.AddError(
+			"Error Parsing Response",
+			fmt.Sprintf("Could not parse credit response: %s", err),
+		)
+		return
+	}
+
+	data.ID = types.Int64Value(creditResp.Data.ID)
+
+	resp.Diagnostics.Append(resp.State.Set(ctx, &data)...)
+}
+
+func (r *SelfServiceCreditResource) Read(ctx context.Context, req resource.ReadRequest, resp *resource.ReadResponse) {
+	var data SelfServiceCreditResourceModel
+	resp.Diagnostics.Append(req.State.Get(ctx, &data)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+	resp.Diagnostics.Append(resp.State.Set(ctx, &data)...)
+}
+
+func (r *SelfServiceCreditResource) Update(_ context.Context, _ resource.UpdateRequest, _ *resource.UpdateResponse) {
+	// All attributes require replacement — updates are never called.
+}
+
+func (r *SelfServiceCreditResource) Delete(ctx context.Context, req resource.DeleteRequest, resp *resource.DeleteResponse) {
+	var data SelfServiceCreditResourceModel
+	resp.Diagnostics.Append(req.State.Get(ctx, &data)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	apiPath := fmt.Sprintf("/selfService/credit/%d", data.ID.ValueInt64())
+	_, err := r.client.Delete(ctx, apiPath)
+	if err != nil {
+		var apiErr *client.APIError
+		if errors.As(err, &apiErr) && apiErr.IsNotFound() {
+			return
+		}
+		resp.Diagnostics.AddError(
+			"Error Cancelling Credit",
+			fmt.Sprintf("Could not cancel credit %d: %s", data.ID.ValueInt64(), err),
+		)
+		return
+	}
+}